Home / 91,154.16-136,730.43-31,975.97

Finding the Fourth Proportional to 91,154.16, 136,730.43 and 31,975.97

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Solution

The fourth proportional to 91,154.16, 136,730.43 and 31,975.97 is: 47,963.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,154.16 : 136,730.43 = 31,975.97 : x
  2. Step 2: Convert to fraction form
    91,154.16/136,730.43 = 31,975.97/x
  3. Step 3: Cross multiply
    91,154.16x = 136,730.43 × 31,975.97
  4. Step 4: Simplify right side
    91,154.16x = 4,372,087,444.11
  5. Step 5: Solve for x
    x = 4,372,087,444.11/91,154.16
  6. Step 6: Final answer
    x = 47,963.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.